JP5639406B2 - Pulp supply equipment for used paper recycling equipment - Google Patents

Description

  The present invention relates to a recycled paper smoothing device for used paper recycling apparatus. More specifically, the present invention relates to a recycled paper smoothing apparatus, and is disposed at a place where the used paper is generated, and the generated used paper is recycled into paper that can be reused on the spot without being disposed of. The present invention relates to a pulp supply device that constitutes a main part of a papermaking section that makes wet paper by making a slurry-like pulp suspension in a small-sized waste paper recycling apparatus for processing the size of a fixture.

  In addition to daily work at various offices such as government offices and general enterprises, various types of used paper, so-called waste paper, are generated in daily life of ordinary households. These waste papers are discarded as trash or incinerated for disposal.

  On the other hand, various technologies for reclaiming waste paper that has been disposed of recently without being disposed of have been developed in the global increase in the momentum of effective utilization of limited earth resources.

  Most of these recycled paper recycling technologies are adopted and implemented in the paper industry. Like the normal papermaking equipment, the used paper recycling equipment has a vast site, enormous volume for the purpose of high-speed mass production and high quality of recycled paper. Investment, and a large amount of water and chemicals used for papermaking.

  In addition, waste paper recycling requires a lot of manual waste paper collection work, and this waste paper collection involves the mixing of foreign substances by many people, poor sorting due to insufficient knowledge of recycled paper, and insufficient removal of repellents. However, even if used paper is collected, in order to recycle these used paper as 100% recycled paper, work such as re-sorting and washing by a specialist is inevitable. Furthermore, waste paper such as top-secret documents is not easily collected for waste paper collection due to confidentiality issues and is incinerated, so recycling is not progressing.

  In order to solve these problems of collecting used paper, it is effective to develop a technology that can be recycled and used at the used paper source. From this viewpoint, the present applicant describes in, for example, Patent Document 1 Various kinds of used paper recycling apparatus have already been developed and proposed.

  This used paper recycling device is a technology that enables large-scale used paper recycling technology, such as used paper recycling factories, to be installed in small-scale stores and general households. The pulp manufacturing department that produces the used paper pulp by disaggregating and beating the paper, the paper making department that produces the recycled paper by making the used paper pulp produced in the pulp manufacturing department, and the pulp manufacturing department and the paper making department The paper-making unit comprises a paper-making process unit that makes waste paper pulp sent from the pulp production unit into wet paper, and wet paper that has been formed in this paper-making process unit. And a drying process section for drying recycled paper, both of which are in the form of a belt conveyor having a running belt for processing and transporting the used paper pulp used paper pulp.

  And the used paper is disaggregated and beaten in the pulp production section to become used paper pulp, and then this used paper pulp is transported by the running belt of the belt conveyor in the paper making section, and each of filtration dewatering, pressing dewatering and heat drying. Through the process, it becomes recycled paper. In this case, at the stage of pulping, the waste paper is decomposed to the fiber level, and the characters and diagrams described there are completely decomposed and extinguished and cannot be restored, and are composed of these characters and diagrams. It is possible to reliably prevent leakage and leakage of confidential information and personal information.

JP 2007-308837 A

  The present invention has been made in view of such conventional problems, and the object of the present invention is to transfer from the pulp production in the previous process, particularly at the start end of the papermaking process section of the papermaking section of the used paper recycling apparatus. By further improving the structure of the pulp supply section that supplies the used paper pulp onto the endless mesh belt that the papermaking process section runs, it can be used not only in large offices, but also in small stores and general households. Pulp supply that enables the basis weight of wet paper to be made on the endless mesh belt to be stable and, in turn, to obtain recycled paper with a uniform texture in a very narrow waste paper processing space, which can be installed as a fixture-sized waste paper recycling device May provide equipment.

In order to achieve this object, the pulp supply apparatus of the used paper recycling apparatus of the present invention is a paper-sized recycling apparatus that can be placed in a place where used paper is generated. Is a device that constitutes a pulp supply section of a papermaking apparatus that manufactures recycled paper, and is disposed so as to be slidable on the upper surface of an endless mesh belt that the papermaking process section travels, and is sent from the pulp manufacturing section. It has a staying part for retaining a slurry-like pulp suspension in which brewing water and waste paper pulp coexist, and comprises a papermaking frame that defines the supply width of the pulp suspension to the upper surface of the endless mesh belt, the distal end portion of the paper making frame body, an overflow means for a constant water level of the pulp suspension to be retained in the retention unit is provided, the overflow means, on the distal end portion of the paper making frame body An overflow weir that is provided on both side walls of the staying part and overflows the pulp suspension when the water level of the pulp suspension retained in the paper making frame exceeds a certain level, and the paper making frame from the outside of the overflow weir And a recovery path that leads to a recovery port through the periphery, and the pulp suspension supplied into the papermaking frame stays in the staying portion up to a water level defined by the overflow means, and this staying action. And the endless reticulated belt is uniformly supplied to the upper surface of the endless reticulated belt by the cooperative action of the endless reticulated belt.

The following configuration is adopted as a preferred embodiment.
(1) In the paper making frame, the width within the frame is set to the width of the recycled paper to be manufactured, and the supply width of the pulp suspension to the upper surface of the endless mesh belt is defined.

( 2 ) The upper edge of the overflow weir is set to be a horizontal straight line when the papermaking frame is installed on the endless mesh belt.

( 3 ) A flat plate member that covers the mesh of the mesh belt in a closed state from the upper side is provided at the bottom of the papermaking frame, and the bottom surface portion of the stay portion is formed by the flat plate member and the traveling endless mesh belt. And the pulp suspension supplied into the papermaking frame stays in the staying portion up to the water level defined by the overflow means, and the staying action and the running operation of the endless mesh belt. Due to the cooperative action, the toner is uniformly distributed on the upper surface of the endless mesh belt.

( 4 ) A thin guide sheet for ensuring a smooth flow of the pulp suspension onto the mesh belt is provided at the leading edge of the flat plate member of the paper making frame.

( 5 ) A meandering flow passage that promotes uniform dispersion of the supplied pulp suspension and prevents disturbance of the pulp suspension is provided on the upstream side of the staying portion in the papermaking frame. Yes.

( 6 ) The meandering flow path is provided so as to meander up and down between the pulp suspension supply port of the papermaking frame and the staying portion.

( 7 ) The tortuous flow path is provided so as to bend in the vertical direction between the pulp suspension supply port of the papermaking frame and the staying portion.

( 8 ) A partition member is provided so as to be slidable on the lower surface of the traveling endless mesh belt.

( 9 ) The partition member has a slat structure that slidably supports the lower surface of the endless mesh belt.

( 10 ) The endless mesh belt is disposed in an upwardly inclined shape in the traveling direction.

  Further, the paper making apparatus of the used paper recycling apparatus of the present invention constitutes a furniture-sized used paper recycling apparatus that can be placed in a place where the used paper is generated, and makes the used paper pulp manufactured by the pulp manufacturing apparatus in the previous process to make recycled paper. A papermaking apparatus for producing wet paper by making a slurry-like pulp suspension in which water and waste paper pulp coexisting from the pulp production apparatus coexist. , A paper making conveyor that transports the pulp suspension while making the pulp suspension, and a pulp supply unit that is provided at the paper making process start end position of the paper making conveyor and supplies the pulp suspension from the pulp manufacturing apparatus to the paper making conveyor The pulp supply unit is configured by the pulp supply device.

  Further, the used paper recycling apparatus of the present invention is a paper manufacturing unit for producing used paper pulp by breaking up and beating the used paper in a furniture-sized device case, and paper making and recycling the used paper pulp manufactured by this pulp manufacturing department. A paper making unit that manufactures paper and a control unit that drives and controls the pulp manufacturing unit and the paper making unit are provided. The paper making unit includes the paper making apparatus.

According to the pulp supply device of the present invention, the paper-making process unit is disposed so as to be slidable on the upper surface of the endless mesh belt, and the slurry-like water in which the water sent from the pulp production unit and the waste paper pulp coexist. A retaining portion for retaining the pulp suspension, and a papermaking frame body that defines the supply width of the pulp suspension to the upper surface of the endless mesh belt, and staying in the retaining portion at the tip portion of the papermaking frame body Overflow means for making the water level of the pulp suspension constant is provided, and the overflow means is provided on both side walls of the staying portion at the tip portion of the papermaking frame body and is retained in the papermaking frame body. An overflow weir that causes the pulp suspension to overflow when the water level of the pulp suspension exceeds a certain level, and a recovery path that leads from the outside of the overflow weir to the recovery port through the periphery of the papermaking frame. Within the frame The supplied pulp suspension stays in the staying portion up to the water level defined by the overflow means, and on the upper surface of the endless mesh belt by the cooperative action of the staying action and the running operation of the endless mesh belt. Even if fluctuations occur in the amount of water supplied to the pulp suspension that is fed into the paper frame, the water level of the pulp suspension that remains in the paper frame is always maintained constant. As a result, the basis weight of the wet paper made on the endless mesh belt is stabilized, and as a result, recycled paper having a uniform texture can be obtained.

  Furthermore, in the paper making apparatus of the present invention provided with the above pulp supply apparatus, it can be installed not only in large establishments, but also in small-scale stores and general homes, etc., and is environmentally friendly and has low running costs. In addition, it is possible to provide a used paper recycling apparatus capable of reliably preventing leakage and outflow of various information such as confidential information and personal information and maintaining high confidentiality.

1 is a front sectional view showing an overall schematic configuration of a used paper recycling apparatus according to an embodiment of the present invention. It is side surface sectional drawing which shows the whole schematic structure of the used paper recycling apparatus similarly. It is a circuit diagram which shows the used paper pulp circulation path structure of the beating part of the used paper recycling apparatus. It is a block diagram which shows the structure of the pulp concentration adjustment part of the used paper recycling apparatus. It is a perspective view which shows the whole schematic structure of the paper making part of the used paper recycling apparatus. It is a perspective view which shows the structure of the pulp supply part in the papermaking part. It is a top view which similarly shows the structure of the pulp supply part. It is sectional drawing which followed the VIII-VIII line of FIG. 7 which similarly shows the structure of the pulp supply part. It is sectional drawing along the IX-IX line of FIG. 7 which similarly shows the structure of the pulp supply part. It is a top view. It is a front view which similarly shows the structure of the pulp supply part. It is a perspective view which shows the external appearance structure of the used paper recycling apparatus.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Throughout the drawings, the same reference numeral indicates the same component or element.

  A used paper recycling apparatus according to the present invention is shown in FIGS. 1 to 11. Specifically, the used paper recycling apparatus 1 is disposed in a place where the used paper is generated, and without discarding the generated used paper UP. , A device that recycles paper into reusable paper on the spot, and used paper UP includes used documents that have been used or no longer needed, such as confidential documents of public offices / general companies, private documents of general households, etc. To do.

  The used paper recycling apparatus 1 has a size as shown in FIG. 11, that is, a small size and size equivalent to furniture such as book shelves, lockers, office desks, copiers, and personal computers arranged and used in an office. As shown in FIG. 1, the pulp making unit 2, the pulp concentration adjusting unit 3, the paper making unit (paper making device) 4, and the device control unit (control unit) 5 are configured as main parts. A pulp supply unit (pulp supply device) 15 having a characteristic configuration according to the present invention is provided.

  These device components 2 to 5 are designed to be compactly accommodated in the device case 6. As described above, the device case 6 is of a furniture size, and the specific shape and dimensions are appropriately designed according to the purpose and application. The apparatus case 6 of the illustrated embodiment is a substantially rectangular parallelepiped box having the shape and size of a copying machine used in an office or the like, and used paper UP is put into the top plate portion of the apparatus case 6. An opening 7 for opening and closing is provided so that it can be opened and closed, and a discharge port 8 for discharging recycled paper RP, RP,. Further, a recycled paper receiving tray 9 for receiving recycled paper RP, RP,... Discharged from the outlet 8 is provided at the lower edge portion of the outlet 8 so as to be removable.

  The pulp manufacturing unit 2 beats the used paper UP in a process part where the used paper UP is disaggregated and beaten to produce the used paper pulp, and the used paper UP is agitated and crushed to disaggregate the used paper UP. It consists of a beating unit 21.

  The disaggregation part 20 is a process part which crushes and crushes waste paper UP, and is comprised by the disaggregation tank 25, the agitator 26, and the water supply apparatus 27 as the main parts.

  As shown in FIG. 2, the disaggregation tank 25 is provided with the input port 7 for supplying and supplying waste paper UP to the ceiling wall, and the bottom wall of the disaggregation tank 25 for discharging the disaggregated waste paper pulp UPP to the downstream side. An outlet 28 is provided. The internal volume of the disaggregation tank 25 is set according to the number of used paper UPs to be stirred at a time. In the illustrated embodiment, about 98 liters of water is added, and a disintegration tank 25 having a volume capable of stirring (batch processing) about 500 sheets (about 2000 g) of A4-sized PPC (plain paper coupler) waste paper UP at a time. It is said that. In this case, the concentration of the used paper pulp UPP to be disaggregated is about 2%. In addition, this density | concentration adjustment is performed by the water supply from the water supply apparatus 27, and this water supply apparatus 27 makes a part of the pulp concentration adjustment part 3 mentioned later.

  The insertion port 7 has a structure that can be opened and closed with respect to the outside of the case cover 6 a of the device case 6. The discharge port 28 can be opened and closed by an on-off valve 29, and can communicate with a waste paper pulp circulation path 49 described later. It should be noted that the discharge port 28 has a contraindication for removing various contraindications that obstruct the next step, such as a clip used to bind used paper UP, UP,..., A binding tool such as a stapler needle. A product filter 30 is provided.

  Specifically, the opening / closing valve 29 is opened / closed by the crank mechanism 36 operated by the drive motor 35. Specifically, an electric motor is used as the drive motor 35, and the drive motor 35 is electrically connected to the apparatus control unit 5.

  The stirring device 26 is provided inside the disaggregation tank 25 and includes a stirring impeller 40 and a drive motor 41.

  The agitation impeller 40 has a rotating shaft 40a that is rotatably supported at the center of the bottom surface of the disaggregation tank 25, and is provided so as to be horizontally rotatable. The lower end of the rotating shaft 40a includes a transmission pulley 42a and a transmission belt 42b. The drive shaft 41a of the drive motor 41 is drive-coupled via a transmission means 42 including a transmission pulley 42c.

  The water supply device 27 supplies water W to the disaggregation tank 25 and constitutes a beating concentration adjusting unit 3A of the pulp concentration adjusting unit 3 as described later.

  As shown in FIG. 1, the water supply device 27 of the illustrated embodiment includes a white water recovery tank 45, a beating concentration adjusting water supply pump 46, and a papermaking concentration adjusting water supply pump 47. As will be described later, the white water collection tank 45 collects white water W (ultra-low concentration pulp water filtered by a paper making net when paper making) that is filtered and dehydrated in the paper making unit 4. The white water W collected in 45 is supplied to the disaggregation tank 25 by the water supply pump 46 and to a concentration adjusting tank 85 to be described later by the water supply pump 47.

  In addition, a weight sensor 48 is provided at the bottom of the disaggregation tank 25 to measure and control the amount of waste paper UP, UP,... The weight sensor 48 is electrically connected to the device controller 5.

  The weight sensor 48 of the illustrated embodiment includes a load cell, and is configured to sense and measure the total weight of the weight of the disaggregation tank 25 and the weight of the used paper UP, UP,... Has been.

  The concrete control configuration in the disaggregation unit 20 is as follows. First, when the input port 7 is opened by an operator and used paper UP, UP,... Is input into the disaggregation tank 25, the weight is detected and measured by the weight sensor 48. Then, when the predetermined weight (number) is reached, the operator is notified by sound and / or display. When the operator closes the charging port 7 in accordance with this display, the water supply device 27 is driven, and the weight of the used paper UP, UP,. The amount corresponding to the number of sheets) is supplied to the disaggregation tank 25.

  In addition, when the operator closes the input port 7 after inputting an arbitrary amount of waste paper UP, UP,... (An amount smaller than the predetermined weight (number)) from the input port 7 to the disaggregation tank 25, The weight is sensed and measured by the weight sensor 48, the water supply device 27 is driven, and the water pump 46 supplies the amount of water W corresponding to the measurement result from the white water recovery tank 45 to the disaggregation tank 25. .

  In the illustrated embodiment, as described above, when a maximum of about 500 sheets (about 2000 g) of A4-sized PPC waste paper UP is put into the disaggregation tank 25, at that time, a sound and / or display is given to the operator. When the charging port 7 is closed, approximately 98 liters of water is added by the water supply device 27 or an arbitrary amount (an amount smaller than the predetermined weight (number)) of the used paper UP, UP,. Even in this case, the amount of water corresponding to the amount of waste paper input is added by the water supply device 27, and the concentration of the waste paper pulp UPP to be disaggregated is controlled and adjusted to about 2%.

  Thus, in the stirring device 26, the used paper UP, UP,... Charged into the disaggregation tank 25 from the charging opening of the device case 6, that is, the charging port 7, is caused by the forward / reverse operation of the stirring impeller 40 by the drive motor 41. In the water supplied from the water supply device 27, the mixture is stirred and mixed for a predetermined time (10 to 20 minutes in the illustrated embodiment), whereby the used paper UP, UP,. It becomes.

  The discharge port 28 of the disaggregation tank 25 is closed by the on-off valve 29 when the disaggregation unit 20 is operated, and the inflow of the used paper UP and the used paper pulp UPP from the disaggregation tank 25 to the used paper pulp circulation path 49 is prevented. On the other hand, during the operation of the beating unit 21 described later, the discharge port 28 is opened by the on-off valve 29, and the inflow and circulation circulation of the used paper pulp UPP from the disaggregation tank 25 to the used paper pulp circulation path 49 are allowed.

  The beating unit 21 is a process part for beating the waste paper UP disaggregated by the disaggregation unit 20, specifically, pressurizing the waste paper UP disaggregated by the disaggregation unit 20, and characters on the waste paper UP, Inks to form figures, etc. (printing inks that form letters, figures, etc. on used paper UP by various printing technologies, or inks, etc., that form letters, figures, etc. on used paper UP by a writing instrument such as a pencil, ballpoint pen, or fountain pen) Are included) and are refined (microfiber).

  The beating unit 21 includes a grinder 50 as a main part. As shown in FIG. 3, the attritor 50 includes a pair of beating disks 51 and 52 that are rotationally driven as main parts, and the pair of beating disks 51 and 52 includes a beating action surface 51 a, 52a is concentrically opposed to each other with a minute beating gap G.

  Further, the beating gap G between the beating action surfaces 51a and 52a of the attritor 50 is set so as to gradually become narrower from the initial attritor 50 in the beating process toward the final attritor 50. Has been.

  In the beating unit 21 according to the present embodiment, as shown in FIG. 3, a waste paper pulp circulation path 49 in which a single grinder 50 is arranged is formed, whereby the waste paper pulp UP is passed through the grinder 50. It is a circulation type that is beaten while being circulated for a predetermined time.

  By performing the beating process by the used paper pulp circulation path 49, an infinitely long used paper pulp beating process path is basically formed with no limit on the length, despite the small and narrow process space in the apparatus case 6 of the furniture size. Thus, it becomes possible to secure a beating process space comparable to the beating process in a large-scale apparatus, and an optimum beating effect can be obtained according to the purpose.

  Further, in connection with the fact that one grinder 50 performs the beating process throughout all the steps of the beating process, this one grinder 50 has a plurality of parts from the initial grinder to the final grinder in the beating process. Also functions as a table grinder. Specifically, the beating gap G of the beating action surfaces 51a and 52a of the grinding machine 50 is controlled and adjusted so as to gradually narrow from the initial stage to the final stage of the beating process.

  As shown in FIG. 2, the attritor 50 of the illustrated embodiment is provided in an apparatus body 54 constituting the apparatus case 6 adjacent to the disaggregation tank 25 of the disaggregation unit 20, and also illustrated in FIG. 3. As described above, the beating tank 55 that can communicate with the disaggregation tank 25 of the disaggregation unit 20, the pair of beating disks 51 and 52 that are relatively rotatably provided in the beating tank 55, and the pair of beating disks 51 , 52 and a rotational drive source 56 that relatively rotates, and a gap adjusting means 57 that adjusts the beating gap G between the pair of beating disks 51 and 52.

  The beating tank 55 has a sealed cylindrical shape capable of accommodating the pair of beating disks 51 and 52, and discharges the beating waste paper pulp UPP to the downstream side, a supply port 55a for supplying the used paper pulp UPP from the upstream side. It has a discharge port 55b.

  Specifically, the supply port 55a is opened in the vertical direction at the bottom center of the beating tank 55, and the discharge port 55b is opened in the horizontal direction on the cylindrical side of the beating tank 55. . As shown in FIG. 3, the supply port 55a and the discharge port 55b are connected to the disaggregation tank 25 of the disaggregation unit 20 through circulation pipes 49a and 49b, respectively, and the discharge port 55b Further, it is possible to communicate with the used paper pulp collecting tank 60 through the discharge pipe 59.

  Reference numeral 61 denotes a direction switching valve. By the switching operation of the direction switching valve 61, the used paper pulp UPP discharged from the discharge port 55b is selectively returned to the disaggregation tank 25 or used paper pulp collecting tank 60. To be recovered. The direction switching valve 61 is specifically composed of an electromagnetic valve, and is electrically connected to the device control unit 5.

  One of the pair of beating disks 51 and 52 is a fixed-side beating disk fixedly provided in the rotation direction, and the other is a rotatable rotating beating disk. In the illustrated embodiment, the upper beating disk 51 is on the rotating side and the lower beating disk 52 is on the fixed side, and the upper beating disk 52 is rotated on the upper side with respect to the lower fixed beating disk 52. The side beating disks 51 are concentrically arranged with a small beating gap G so as to be rotatable. The rotation-side beating disk 51 is drivably coupled to a drive motor 56 via a rotation main shaft 64 that is rotatably supported on the fixed side of the device body 54 and is movable in the axial direction.

  Although not specifically shown, the rotation main shaft 64 is rotatably supported by a lifting member of the gap adjusting means 57, and the rotation side beating disk 51 is concentrically and integrally formed at the tip thereof. And a base end portion of the drive motor 56 is connected to the rotation shaft of the drive motor 56 so as to be integrally movable in the rotation direction and relatively movable in the axial direction.

  The drive motor 56, which is a rotational drive source, relatively rotates the pair of beating disks 51, 52. Specifically, an electric motor is used, and the drive motor 56, which is the drive source, controls the apparatus. It is electrically connected to the part 5.

  The opposing surfaces 51a and 52a of the two beating disks 51 and 52 that form the minute beating gap G cooperate to form a beating action surface. These opposing beating action surfaces 51a and 52a are in the form of a grindstone surface in which a large number of abrasive grains are bonded together by a binder. Further, as shown in FIG. 3, the two beating action surfaces 51a and 52a are formed into tapered surfaces whose diameters are continuously increased in the opposing directions, and the outer circumferential edges are parallel to each other. These annular flat surfaces form the beating gap G.

  In other words, in the pair of beating disks 51, 52, an inlet 70 that is coaxially connected to the beating tank supply port 55a is formed at the central portion of the beating action surface 52a of the fixed-side beating disk 52, and Two annular flat surfaces formed on the outer peripheral edge portions of the beating action surfaces 51a and 52a of the pair of beating disks 51 and 52 communicate with the discharge port 55b of the beating tank 55 and have the beating gap G. Is forming.

  Further, a plurality of blades 72, 72,... Are provided on the outer periphery of the rotation-side beating disk 51 at a predetermined interval in the circumferential direction, and these blades 72, 72,. The used paper pulp UPP discharged from the outlet 71 has a pumping action to extrude it toward the discharge port 55b of the beating tank 55 by centrifugal force.

  Thus, in a state where the rotation-side beating disk 51 is rotationally driven with respect to the fixed-side beating disk 52 by the drive motor 56 that is a drive source, the supply port 55a of the beating tank 55 from the disaggregation tank 25 of the disaggregation unit 20; Waste paper pulp UPP supplied to the beating space B through the inlet 70 flows into the beating space B from the inlet 70 and passes through the beating space B, and is rotated by the beating action surfaces 51a and 52a that rotate relatively. In addition to being subjected to the pressure beating action, the inks that form letters, figures, etc. on the used paper UP are ground and refined, and then discharged from the outlet 71 through the discharge port 55b of the beating tank 55.

  When discharged from the outlet 71, the waste paper pulp UPP is further subjected to a pressure beating action at the outlet 71 portion having the beating gap G, and is refined to a predetermined micron size defined by the beating gap G ( Microfiber).

  In this regard, in the present embodiment, as described above, in connection with the adoption of the circulation type beating process (see FIG. 3) in which one grinder 50 is disposed in the waste paper pulp circulation path 49. In other words, in connection with the fact that the one grinder 50 functions as a plurality of grinders from the initial grinder to the final grinder in the beating process, The gap G is controlled and adjusted by the gap adjusting means 57 so as to gradually narrow from the initial stage to the final stage of the beating process.

  Although not specifically shown, the gap adjusting means 57 is configured to control and adjust the beating gap G of the beating disks 51 and 52 by relatively moving the pair of beating disks 51 and 52 in the rotation axis direction. The main part is composed of a moving means (not shown) for moving the rotating side beating disk 51 in the rotation axis direction, that is, the axial direction of the rotation main shaft 64, and a drive source 66 for driving the moving means. Specifically, an electric motor is used as the drive source, and the drive motor 66 is electrically connected to the apparatus control unit 5.

  The rotation of the electric motor 66 causes the rotation main shaft 64 to move up and down via the moving means, whereby the rotation-side beating disk 51 integrated with the rotation main shaft 64 moves in the vertical direction with respect to the fixed-side beating disk 52. That is, the beating gap G between the beating disks 51 and 52 is controlled and adjusted by moving in the rotation axis direction.

  For this purpose, a position detection sensor (not shown) for detecting the ascending / descending position of the rotating side beating disk 51 is provided, and the drive motor 66 is driven and controlled by the detection result of the position detection sensor. The position detection sensor is electrically connected to the device controller 5.

  The control adjustment of the beating gap G of the beating disks 51 and 52 by the gap adjusting means 57 is performed in conjunction with the circulation pump 69 which is the circulation means in the circulation type beating process in the used paper pulp circulation path 49 shown in FIG. Is called.

  That is, in FIG. 3, the used paper pulp UPP that has been disaggregated by the disaggregation unit 20 is circulated in the used paper pulp circulation path 49 by the circulation pump 69, and the beating process by the mill 50 is performed. The beating gap G of the 50 beating action surfaces 51a, 52a is configured to be gradually narrowed by the gap adjusting means 57 from the initial stage to the final stage of the beating process.

  As described above, one grinder 50 is disposed in the waste paper pulp circulation path 49, and the beating gap G of the grinder 50 is controlled and adjusted so as to gradually narrow from the initial stage to the final stage of the beating process. By adopting a circulation type configuration, even in a very narrow process space of the size of the furniture, the used paper pulp UPP can be used for the pressure beating action and the ink by the beating action surfaces 51a and 52a of the mill 50 where the beating gap G is gradually narrowed. The grinding and refining action is repeated by an appropriate number of times in succession, and the beating and the ink grinding and refining are uniformly performed throughout the used paper pulp UPP circulating through the used paper pulp circulation path 49. As a result, it is possible to obtain an optimum paper strength strength for recycled paper RP to be recycled by the papermaking unit 4 described later, and to obtain recycled paper RP with high whiteness (an effect equivalent to deinking is obtained). ).

  Further, in relation to the fact that the waste paper pulp circulation path 49 includes the disaggregation tank 25 of the disaggregation unit 20, in the beating process, the stirring device 26 of the disaggregation unit 20 is driven and controlled, and the disaggregation unit 20 is configured to be driven simultaneously with the beating unit 21. That is, in the circulation type beating process, the used paper pulp UPP flows out from the disaggregation tank 25 to the used paper pulp circulation path 49, while the used paper pulp UPP that has been beaten by the grinder 50 flows into the disaggregation tank 25. Since used paper pulp UPP having different beating degree is mixed in 25, the beating degree of the used paper pulp UPP in the disaggregation tank 25 is made uniform by the stirring action of the stirring device 26, and the beating process is promoted.

  The used paper pulp collecting tank 60 is a part that collects the used paper pulp UPP that has been refined to a predetermined size by the beating unit 21. Is sent to the pulp suspension PS mixed and adjusted to a papermaking concentration corresponding to the finished paper quality of the recycled paper RP to be recycled by the pulp concentration adjusting unit 3.

  The pulp concentration adjusting unit 3 is a gravimetric type that adjusts the mixing ratio of the used paper UP and the water W to be fed into the apparatus by weight measurement to adjust the concentration of the used paper pulp UPP supplied to the paper making unit 4. Specifically, as shown in FIG. 4, a beating concentration adjusting unit 3A, a paper making concentration adjusting unit 3B, and a pulp concentration controlling unit 3C are provided.

  The beating concentration adjusting unit 3A adjusts the beating concentration of the used paper pulp UPP in the pulp manufacturing unit 2 in accordance with the beating efficiency of the beating unit 21, and as described above, the feed pump for adjusting the beating concentration of the water supply device 27. 46 and the beating concentration control unit 75 are configured as main parts.

  The supply amount of the white water W by the water supply pump 46 of the beating concentration adjusting unit 3A is, for example, the beating unit 21 in which the beating concentration of the used paper pulp UPP disaggregated and beaten by the stirring device 26 executes the beating step which is the next step. It is desirable that the maximum concentration allowed for the beating ability of the grinder 50 is set, and in the illustrated embodiment, the beating concentration is set to about 2% as described above.

  Then, as described above, the beating concentration control unit 75 drives and controls the water supply pump 46 so as to supply a necessary amount of water W to the disaggregation tank 25 according to the measurement result from the weight sensor 48. The beating concentration control unit 75 constitutes a part of the device control unit 5 as described later.

  The paper making concentration adjusting unit 3B adjusts the paper making concentration of the used paper pulp UPP in the paper making unit 4 to an appropriate concentration corresponding to the finished paper quality of the recycled paper RP to be recycled. It is set as the structure which adjusts the density | concentration of the used waste paper pulp UPP in a division | segmentation format, and is provided with the division extraction part 80, the suspension preparation part 81, and the papermaking density | concentration control part 82 as a main part.

  The classification extraction unit 80 extracts a predetermined small amount from the total amount of the used paper pulp UPP manufactured by the pulp manufacturing unit 2 in the previous process, and extracts the used paper pulp UPP from the used paper pulp recovery tank 60 to adjust the concentration. 85 is provided with a waste paper pulp supply pump 86 for sorting and extraction.

  The suspension preparation unit 81 adds a predetermined amount of water W for concentration adjustment to a predetermined small amount of waste paper pulp UPP that has been sectioned and extracted by the section extraction unit 80, thereby suspending a pulp suspension having a predetermined concentration. The liquid PS is prepared, and includes the water supply pump 47 of the water supply device 27 described above as a main part.

  Although not specifically shown, a weight sensor 87 made of a load cell is provided at the bottom of the concentration adjustment tank 85 as in the case of the disaggregation tank 25 described above, and is supplied into the concentration adjustment tank 85. The weight sensor 87 is electrically connected to the apparatus control unit 5. The weight sensor 87 is electrically connected to the apparatus control unit 5.

  The paper making density control unit 82 controls the section extraction unit 80 and the suspension preparation unit 81 in conjunction with each other and constitutes a part of the apparatus control unit 5 and executes the following paper making density adjustment process. As described above, the pumps 86 and 47 of the section extraction unit 80 and the suspension preparation unit 81 are controlled in conjunction with each other.

  That is, first, from the total amount of used paper pulp UPP recovered from the beating unit 21 to the used paper pulp recovery tank 60 (in the illustrated embodiment, about 2000 g of used paper UP + 100 l of water W), the used paper pulp supply pump 86 performs predetermined processing. A quantity (1 l in the illustrated embodiment) of the used paper pulp UPP is divided and transferred to the concentration adjusting tank 85. Then, the weight is sensed and measured by the weight sensor 87, and the result is sent to the device controller 5.

  Subsequently, the water W for dilution is supplied from the white water recovery tank 45 to the concentration adjustment tank 85 by the water supply pump 47 in accordance with a predetermined amount of the sorted waste paper pulp UPP (9 l in the illustrated embodiment). (Actually, by weight measurement of the weight sensor 87)).

  As a result, in the concentration adjusting tank 85, the waste paper pulp UPP having a beating concentration (2% in the illustrated embodiment) is mixed and diluted with the water W to have a predetermined concentration (about 0.2% in the illustrated embodiment). A pulp suspension PS having a concentration (target concentration) is prepared by mixing.

  Note that the target concentration of the pulp suspension PS to be prepared is set in consideration of the paper making capability in the paper making unit 4 described later based on experimental data performed in advance. In the case of the illustrated embodiment, the above-described target concentration is set. Thus, the concentration is set to about 0.2%.

  Thus, the pulp suspension PS prepared in the concentration adjusting tank 85 to the target papermaking concentration (0.2%) is transferred from the concentration adjusting tank 85 to the pulp supplying tank by the first suspension supply pump 88. It is transported and supplied to 89 and stored on standby for the paper making unit 4 in the next process. Thereafter, this papermaking density adjusting step is repeated in the same manner for the entire amount of used paper pulp UPP in the used paper pulp collecting tank 60. The pulp supply tank 89 is provided with a second suspension supply pump 90 for sending the pulp suspension PS to the papermaking belt conveyor unit 95 of the papermaking unit 4.

  Further, a stirring device 91 is provided in the pulp supply tank 89, and by the stirring action of this stirring device 87, the paper making concentration of the entire pulp suspension PS that is stored on standby is made uniform and held at a constant value. The

  As described above, the density adjustment by the papermaking density adjusting unit 3 is not a batch type, but is performed in a segmented form, that is, a dispensing form. Significant reduction in size is also possible, and further, the waste paper recycling apparatus 1 as a whole can be made compact.

  The pulp concentration control unit 3C drives and controls the beating concentration adjusting unit 3A and the paper making concentration adjusting unit 3B. Specifically, the pulp concentration control from the beating concentration control unit 75 of the beating concentration adjusting unit 3A. Receives information (input amount of used paper UP, amount of water supplied to the disaggregation tank 25, beating concentration of used paper pulp UPP, etc.), and targets the concentration of used paper pulp UPP manufactured by the pulp manufacturing unit 2 according to this control information Paper density control information (target paper density of used paper pulp UPP, classified extraction amount of used paper pulp UPP from the used paper pulp recovery tank 60, water supply amount to the density adjusting tank 85, etc.) for making the value (paper density) The paper making density control unit 82 of the adjusting unit 3B is sent to the paper making density control unit 82, thereby executing the paper making density adjusting process described above.

  The paper making unit 4 is a process part for making a recycled paper RP by making the used paper pulp UPP produced in the pulp production unit 2 as a previous step, and as shown in FIGS. 1 and 5, a paper making belt conveyor unit ( The paper making process section) 95, the dewatering roll section 96, and the drying belt conveyor section 97 are configured as main parts, and the pulp making section (pulp feeding apparatus) having the characteristic configuration according to the present invention described above is included in the paper making belt conveyor section 95. ) 15 is provided.

  The papermaking belt conveyor section 95 is a papermaking process section for making wet paper by making a slurry-like pulp suspension PS in which water W and wastepaper pulp UPP coexisting from the pulp supply tank 89 of the pulp manufacturing section 2 coexist. In the functioning part, the papermaking net conveyor (papermaking conveyor) 100 and the pulp supply unit 15 are configured as main parts.

  The papermaking net conveyor 100 conveys the pulp suspension PS while papermaking, and a net-like belt 105 having a papermaking net structure composed of innumerable meshes for filtering and dewatering the pulp suspension PS is directed toward its running direction. It is the arrangement configuration that runs in a straight line.

  More specifically, the papermaking net conveyor 100 is a mesh belt (endless mesh belt) 105 in the form of an endless belt that travels while making pulp suspension PS, and a drive that drives the mesh belt 105 to travel. And a motor 106.

  The sheet material of the mesh net structure constituting the mesh belt 105 is made of a material that allows the pulp suspension PS to be appropriately filtered and dehydrated by the innumerable meshes of the mesh mesh structure. Preferably, polypropylene (PP), polyethylene It is made of a material having excellent corrosion resistance such as terephthalate (PET), polyamide (PA) (generally called “nylon” (registered trademark)), or stainless steel (SUS). This is a PET mesh belt 105 having excellent properties.

  Further, the paper making net structure constituting the mesh belt 105 is preferably a fine mesh or a fine smooth mesh, and specifically selected according to the characteristics of the target paper. Points are taken into account.

(1) Mesh size of mesh belt 105:
The mesh size of the mesh belt 105 is preferably set to 25 mesh to 80 mesh, and the mesh belt 105 of 50 mesh is adopted in the illustrated embodiment.

(2) Mesh diameter of mesh belt 105:
The mesh of the mesh belt 105 greatly affects not only the number of meshes (size) but also the wire diameter of the mesh. Even if the number of meshes is the same, if the wire diameter is large, the mesh size will be small, and if it is thin, the mesh size will be large. This is expressed by the mesh space ratio or air permeability (cm ³ / cm ² / sec). The

  For example, if the mesh is fine and the air permeability is poor, the drainage rate is also deteriorated. As a result, the shape and size of the pulp supply unit 15 described later becomes longer in the traveling direction of the mesh belt 105, leading to an increase in the size of the apparatus. On the contrary, if the mesh is rough and the air permeability is too good, the pulp supply unit 15 is short and the apparatus is small, but the recycled paper RP to be recycled has a rough paper quality, and smoothness of the front and back surfaces. The difference between the two becomes large, and the paper has poor smoothness.

  In consideration of various conditions including the above, the mesh belt 105 has a small mesh wire diameter, a large number of meshes, and aeration to prevent the waste paper pulp UPP from falling off the mesh of the mesh belt 105 during papermaking. A mesh structure that does not drop the degree is preferable. As the mesh belt 105 of the illustrated embodiment, a 50 mesh mesh net belt 105 made of plain mesh is used. According to this mesh belt 105, it has been experimentally found that good paper quality with no problem in writing can be obtained.

  Furthermore, the width dimension of the mesh belt 105 is set to a predetermined width dimension slightly larger than the width dimension L of the recycled paper RP to be manufactured by making the pulp suspension PS.

  As shown in FIGS. 1 and 5, the mesh belt 105 is suspended and supported so as to be able to rotate by way of a drive roller 107, a dewatering roll unit 96, a driven roller 108 and a support roller 109. Via the drive motor 106.

  The length of the paper making process in the mesh belt 105 is the length in the upper traveling direction of the mesh belt 105 in the apparatus case 6 of the above-mentioned fixture size (in the case of illustration, from the pulp supply unit 15 to the dewatering roll unit 96 in FIG. (Length in the left-right direction) is set.

  The traveling speed of the mesh belt 105 is set in consideration of various conditions in the paper making process, and is preferably set to 0.1 m / min to 1 m / min. It is set to 2 m / min. Incidentally, the traveling speed of this type of papermaking belt in a large-scale factory such as a conventional used paper recycling factory is set to at least 100 m / min or more, and is set to a speed far exceeding 1000 m / min in the early one.

  As shown in FIGS. 1 and 5, the mesh belt 105 has an arrangement configuration in which the mesh belt 105 travels in an upwardly inclined manner and linearly in the traveling direction so that the length of the papermaking process in a limited installation space is possible. In addition, the filtration and dewatering rate is improved in relation to the netting net structure of the mesh belt 105.

  The drive motor 106 that travels and drives the mesh belt 105 is specifically an electric motor, and is electrically connected to the apparatus controller 5. The drive motor 106 is also used as a travel drive source for a dewatering roll unit 96 and a drying belt conveyor unit 97 which will be described later.

  The pulp supply unit (pulp supply device) 15 is a part that supplies the pulp suspension PS from the pulp manufacturing unit 2 onto the mesh belt 105 and is provided at the papermaking process start end position of the papermaking net conveyor 100. In addition, the pulp supply unit 15 is configured to uniformly distribute and supply the pulp suspension PS to the upper surface of the mesh belt 105.

  The specific structure of the illustrated pulp supply unit 15 is shown in FIGS. That is, in the pulp supply unit 15, the mesh belt 105 is disposed in an upwardly inclined shape in the traveling direction as described above, and the papermaking frame 110 and the partition member 111 are disposed at both upper and lower positions of the mesh belt 105. Are arranged.

  The papermaking frame 110 is slidably disposed on the upper surface of the mesh belt 105 and defines a supply width L of the pulp suspension PS sent from the pulp manufacturing unit 2 to the upper surface of the mesh belt 105. Therefore, a main body frame 112, a staying portion 113, an overflow portion (overflow means) 114, and a flow passage 115 are provided as main portions.

  The main body frame 112 has a substantially U-shaped planar shape with the leading end, that is, the end in the traveling direction of the mesh belt 105 open, and the lower end surface 112a is arranged so as to be in sliding contact with the upper surface 105a of the mesh belt 105 that is inclined. In addition, the inner frame width dimension of the main body frame 112, that is, the inner frame width dimension L of the papermaking frame 110 is set corresponding to the width dimension of the recycled paper RP to be manufactured, and the pulp suspension A supply width L of PS to the upper surface 105a of the mesh belt 105 is defined (see FIGS. 6, 7 and 10).

  The retention part 113 is a part that retains the slurry-like pulp suspension PS in which the water W sent from the pulp production part 2 and the waste paper pulp UPP coexist, specifically, at the bottom of the main body frame 112, A flat plate member 300 is provided so as to cover the mesh of the mesh belt 105 from the upper side in a closed state. The flat plate member 300 and the traveling mesh belt 105 form a bottom surface portion of the stay portion 113.

  In relation to this, a thin guide sheet 301 for ensuring a smooth flow of the pulp suspension PS onto the mesh belt 105 is provided at the leading edge of the flat plate member 300.

  An overflow part (overflow means) 114 is provided at a tip portion of the papermaking frame 110 for making the water level of the pulp suspension PS retained in the retention part 113 constant.

  Specifically, the overflow part 114 includes an overflow weir 302 and a recovery path 303 as main parts, and is provided on both sides of the stay part 113 in the illustrated embodiment.

  The overflow weir 302 is provided on the inner wall 304 that constitutes both side walls of the staying portion 113 at the front end portion of the main body frame 112, and when the water level H of the pulp suspension PS staying in the staying portion 113 exceeds a certain level, the pulp Allow the suspension PS to overflow. The inner wall 304 forms the stay portion 113 by the flat plate member 300 that forms the bottom surface portion described above and the mesh belt 105 that travels.

The upper edge 302 a of the overflow weir 302 is set to be a horizontal straight line when the papermaking frame 110 is installed on the mesh belt 105. Further, the height position of the upper edge 302a of the overflow weir 302 is determined so that the basis weight of the wet paper RP _{0 and} further the recycled paper RP made on the mesh belt 105 is stably maintained at a desired value. Are set in accordance with the above-mentioned various conditions.

That is, in order to stably secure the basis weight of the wet paper RP _{0 to} be made on the mesh belt 105, the retention action of the pulp suspension PS in the stay portion 113 of the paper making frame 110 is an important factor. This staying action is greatly influenced by the amount of water (the amount of staying water) of the pulp suspension PS in the staying portion 113. For this reason, it is very important to keep the water amount of the pulp suspension PS, that is, the water level H constant.

  In the main pulp supply unit 15, the overflow weirs 302 and 302 are provided so that the water level H of the pulp suspension PS in the staying unit 113 is stably maintained at a predetermined value.

Further, the overflow weir 302 is provided in the vicinity of both side walls 304, 304 of the staying portion 113 at the tip portion of the main body frame 112, that is, the mesh belt 105 that performs the drainage papermaking function of the pulp suspension PS, The amount of water of the pulp suspension PS, that is, the water level H can be stably maintained with high accuracy, and the basis weight of the wet paper RP _{0 to} be made on the mesh belt 105 can always be secured stably. .

  The recovery path 303 is a path for recovering the pulp suspension PS that has overflowed from the overflow weir 302, and communicates from the outside of the overflow weir 302 to the recovery port 303a through the periphery of the main body frame 112.

  The pulp suspension PS overflowed from the overflow weir 302 is recovered to flow down to the recovery path 303 and is recovered from the recovery port 303a to the pulp supply tank 89 and reused.

The flow path 115 is for promoting uniform dispersion of the pulp suspension PS supplied to the staying portion 113 and preventing disturbance of the pulp suspension PS. The flow path 115 is in the form of a winding flow path. It is provided on the upstream side of the stay part 113.

  Specifically, the flow passage 115 is provided to bend in the vertical direction between the supply port 115a of the pulp suspension PS of the paper making frame 110 and the staying portion 113.

  The flow passage 115 in the illustrated embodiment is mainly configured by a plurality of partition plates 305, 305,... Provided in the main body frame 112, specifically, a partition provided in the supply unit 306 of the main body frame 112. The flow passage 115 is formed by winding the plate 305a, the rear portion (partition plate) 305b of the flat plate member 300 that forms the bottom surface of the main body frame 112, and the partition plate 305c provided upright in the main body frame 112. ing. The flow path 115 travels in an upward direction, bypassing the partition plate 305a from the supply port 115a opened at the inlet, that is, the bottom of the supply unit 306, and further bypassing the partition plate 305b. It is set as the structure extended toward the exit 115b opened in the lower side of 305c (refer the arrow in FIG. 8). The supply port 115a can communicate with a pulp supply tank 89 that supplies the pulp suspension PS.

  The upper edge of the partition plate 305 c provided upright in the main body frame 112 is the water level of the pulp suspension PS that flows and stays on the flat plate member 116, that is, the water level H defined by the overflow weir 302. It is set so as to be positioned lower than.

  Further, the assembly structure of the partition plates 305a, 305b, 305c and the main body frame 112 forming the flow passage 115 is formed by integrally connecting and assembling the partition plates 305a, 305b, 305c separately formed to the main body frame 112. In addition, when formed from a material that can be integrally molded, such as plastic that can be injection molded, it may be integrally molded.

  The partition member 111 has a drainable slat structure composed of a plurality of frame members 111 a, 111 a,... And has a shape dimension for slidingly supporting the full width of the lower surface of the mesh belt 105.

  In this connection, as described above, a thin guide sheet for ensuring a smooth flow of the pulp suspension PS onto the mesh belt 105 is provided at the leading edge of the flat plate member 116 of the papermaking frame 110. 301 is provided, and the leading edge 88a of the guide sheet 88 is set at a position corresponding to one of the crosspieces forming the slat structure of the partition member 111, that is, the frame members 111a, 111a,. Are arranged in sliding contact with the upper surface portion of the mesh belt 105 supported by the crosspiece 111a.

  The effects of the pulp suspension PS in the flow path structure in the pulp supply unit 15 are estimated as follows.

(I) Winding path of the flow path 115:
The curved flow path 115 defined by the partition plate 305 (305a, 305b, 305c) is long and twisted, and the pulp suspension PS is evenly dispersed by passing through such a flow path 115, and the pulp Disturbance of the suspension PS is effectively prevented.

(Ii) Overflow weir 302:
Even if the supply amount of the pulp suspension PS sent into the papermaking frame 110 varies due to the presence of the overflow weirs 302 and 30, the water level H of the pulp suspension PS staying in the papermaking frame 110. Is always kept constant, and as a result, the basis weight (paper thickness) of the wet paper RP _{0 made} on the mesh belt 105 can be stabilized.

  That is, in the paper making process, in order to make the basis weight (paper thickness) constant, it is necessary to make the supply amount of the pulp suspension PS onto the mesh belt 105 constant. In the supply amount adjustment by the second suspension supply pump 90, since the pump rotation is not the supply amount of the pulp suspension PS, the basis weight varies greatly.

  On the other hand, when the water level H of the pulp suspension PS staying in the papermaking frame 110 is constant, the supply water amount of the pulp suspension PS is also fixed, and the papermaking frame 110 The pulp suspension PS is overflowed from the front end of the paper, and the water level H of the pulp suspension PS staying in the papermaking frame 110 is made constant. Thereby, even if there is a fluctuation in the discharge amount of the second suspension supply pump 90, the water level becomes constant, so that a stable basis weight can be obtained. In addition, precise pump control becomes unnecessary.

(Iii) Thin guide sheet 301 at the leading edge of the flat plate member 300:
The leading edge 301a of the guide sheet 301 is slidably disposed on the upper surface portion of the mesh belt 105 supported by the frame member 111a that forms the slat structure of the partition member 111, so that uniform filtration by the net of the mesh belt 105 is performed. Water is secured.

  When it is between the framework members 111a and 111a of the partition member 111, the pulp suspension PS tends to freely flow in the direction of the driven roller 108 when it is drained from the netting structure of the mesh belt 105, For this reason, uniform drainage by the mesh is difficult, and locally uneven drainage sites appear. Thus, when drainage is non-uniform | heterogenous, a vertical stripe pattern will be produced in the formation of the recycled paper RP.

  On the other hand, as shown in the illustrated embodiment, the leading edge 301a of the guide sheet 301 is set at the upper surface position of the skeleton member 111a that forms the slat structure of the partition member 111. Effectively avoided.

  The pulp supply tank 89 for supplying the pulp suspension PS to the pulp supply unit 15 is provided on the upstream side of the pulp supply unit 15.

  Thus, when the pulp suspension PS stored in the pulp supply tank 89 is supplied from the supply port 115a to the flow passage 115 in the papermaking frame 110 by the second suspension supply pump 90, After slowly passing through the winding flow passage 115 as indicated by an arrow in FIG. 8, it flows from the outlet 115b to the staying portion 113 and stays at the water level H defined by the overflow weirs 302 and 302. Due to the cooperative action of the staying action and the traveling operation of the mesh belt 105, the staying action is uniformly diffused and supplied to the upper surface of the mesh belt 105 that is arranged to be inclined upward in the running direction.

  On the other hand, the pulp suspension PS that has overflowed from the overflow weir 302 and recovered in the recovery path 303 is recovered into the pulp supply tank 89 as described above.

The pulp suspension PS uniformly spread on the upper surface of the mesh belt 105 is subjected to its own weight filtering action by the mesh of the mesh belt 105 while being transported together with the mesh belt 105 by the traveling action of the mesh belt 105 in the direction of the arrow. Thus, the wet paper web RP ₀ (in the illustrated embodiment, moisture content of 90 to 85%) is obtained.

  The white water W filtered and dehydrated by the mesh belt 105 (ultra-low concentration pulp water filtered by the paper making net when making paper) is collected in the white water collecting tank 45 of the water supply device 27 as described above.

The dewatering roll unit 96 constitutes a portion for squeezing and dewatering the wet paper RP ₀ on the mesh belt 105 in the linkage portion of the papermaking belt conveyor unit 95 and the drying belt conveyor unit 97 described later.

  Specifically, a smooth surface belt 145 (to be described later) of the drying belt conveyor unit 97 on the downstream side and a mesh belt 105 of the papermaking belt conveyor unit 95 on the upstream side are vertically moved as shown in FIGS. The upper and lower adjacent portions of the smooth surface belt 145 and the mesh belt 105 are used as the link portions, and the dewatering roll 96 is connected to the mesh belt 105 and the smooth surface belt. It is set as the structure which rolls and squeezes 145 in the shape of pinching from both upper and lower sides.

  The dewatering roll unit 96 includes at least a preliminary dewatering roll unit 96A and a main dewatering roll unit 96B as main parts.

  As shown in FIG. 5, the illustrated dewatering roll unit 96 includes a preliminary dewatering roll unit 96A, a main dewatering roll unit 96B, and an angle defining roll unit 96C as auxiliary means.

Preliminary dewatering roll unit 96A is for squeezing and dewatering preliminarily the wet paper RP ₀ on the mesh belt 105, specifically, the preliminary dewatering roll 120 rolling contact from the lower side to the mesh belt 105, the preliminary A pre-squeezing roll pair 122 comprising a pre-press roll 121 that rolls and presses the smooth surface belt 145 from above with respect to the dewatering roll 120 is provided.

The mesh belt 105 and the smooth surface belt 145 are squeezed and squeezed in a pinched form with a predetermined preliminary pressure from both the upper and lower sides by the pair of preliminary pressing rolls 122 including the preliminary dewatering roll 120 and the preliminary press roll 121, and The moisture contained in the wet paper RP ₀ on the mesh belt 105 is preliminarily dehydrated and removed.

Preliminary pressure in this case, that preliminary squeezing force of the preliminary dewatering roll unit 96A for preliminarily squeezing and dewatering the wet paper RP ₀ on the mesh belt 105 is, as not Shimawa collapse is wet paper RP ₀ containing a large amount of water In the illustrated embodiment, the preliminary squeezing force is set so that the moisture content of the wet paper on the mesh belt 105 after preliminary dehydration is in the range of 80 to 75%. .

The dewatering roll unit 96B is a main paper RP ₀ on the mesh belt 105 preliminarily dehydrated by the predewatering roll unit 96A to depressurize and dehydrate it into a dry paper (recycled paper) RP having a predetermined moisture content. Specifically, the main pressing roll 126 is composed of a main dewatering roll 125 that rolls into contact with the mesh belt 105 from below, and a main press roll 126 that rolls and presses the smooth surface belt 145 from above on the main dewatering roll 125. At least one set of roll pairs 127 is provided.

Then, the net belt 105 and the smooth surface belt 145 are squeezed in a pinched manner with a predetermined main pressure from both the upper and lower sides by the main pressing roll pair 127 including the main dewatering roll 125 and the main pressing roll 126, The moisture contained in the wet paper RP ₀ on the mesh belt 105 is finally dehydrated and removed to obtain dry paper with a predetermined moisture content, that is, recycled paper RP.

The final squeezing force of the final dewatering roll unit 96B for final squeezing and dewatering the wet paper RP ₀ on the pressure, i.e. the mesh belt 105 in this case is certainly given dewatering effect for wet paper RP ₀ preliminary dewatering is obtained In the illustrated embodiment, the water content of the dry paper (recycled paper) RP on the net belt 105 after the final dehydration is set in the range of 70 to 65%.

  Although not specifically shown, the rolls 120, 121, 125, and 126 in the dewatering roll unit 96 are drivingly connected to a single driving motor 106 by a driving connecting means including a gear mechanism, and all the rolls 120, 121 are connected. , 125, 126 are driven to rotate in conjunction with each other.

  In this case, the rolls 120, 121, 125, and 126 are meshed between the outer peripheral surfaces of the mesh belt 105 that is squeezed and pressed between the outer peripheral surfaces, and the contact surfaces of the smooth surface belt 145 (the lower surface of the mesh belt 105 and the smooth surface belt 145 The outer peripheral surfaces of the upper and lower rolls 120 and 125 and the outer peripheral surfaces of 121 and 126 are controlled so as to be in rolling contact with each other with a slight rotational speed difference.

Specifically, the rotational speed of the upper spare and main press rolls 121 and 126 is set to be slightly higher than the rotational speed of the lower preliminary and main dewatering rolls 120 and 125, and thereby the smooth surface belt 145. Is set to be slightly higher than the traveling speed of the mesh belt 105. With this configuration, as will be described later, the wet paper RP ₀ squeezed and dehydrated by the dewatering roll unit 96 is transferred from the upper surface of the lower mesh belt 105 to the lower surface of the upper smooth surface belt 145. when it is, tension is applied to the wet paper RP _0, effectively prevents creasing of wet paper RP _0.

  The angle defining roll part (angle defining means) 96C is for assisting and squeezing the dewatering action by the preliminary dewatering roll part 96A and the main dewatering roll part 96B, and is provided upstream of the preliminary dewatering roll part 96A. The inclination angle between the mesh belt 105 and the smooth surface belt 145 that is provided and inserted into the preliminary dewatering roll portion 96A is defined.

  Specifically, the angle defining roll portion 96C defines an inclination angle between the mesh belt 105 and the smooth surface belt 145 inserted into the preliminary dewatering roll portion 96A. Rolling contact from below to the preliminary dewatering roll section 96A, and a mesh belt guide roll 130 defining the insertion angle of the mesh belt 105 with respect to the preliminary dewatering roll section 96A, and rolling contact with the smooth surface belt 145 from above to the preliminary dewatering roll section 96A. And a smooth surface belt guide roll 131 that defines the insertion angle of the smooth surface belt 145.

  The mesh belt guide roll 130 defines the insertion angle of the mesh belt 105 with respect to the preliminary dewatering roll portion 96A, and the smooth surface belt guide roll 131 defines the insertion angle of the smooth surface belt 145 with respect to the preliminary dewatering roll portion 96A. As a result, the inclination angle formed by the mesh belt 105 and the smooth surface belt 145 is indirectly set within a predetermined range.

The inclination angle formed by the mesh belt 105 and the smooth surface belt 145 is such that a large amount of water contained in the wet paper RP ₀ is squeezed upstream of the preliminary dewatering roll unit 96A by the preliminary dewatering action of the preliminary dewatering roll unit 96A. The large amount of the squeezed water is set so as to effectively prevent the wet paper RP ₀ from being reabsorbed by the wet paper RP _{0 and} being slurried again.

In other words, the preliminary dewatering roll 120 and the preliminary press roll 121 of the preliminarily dewatering roll section 96A squeeze the mesh belt 105 having the wet paper RP ₀ placed on the upper surface and the smooth surface belt 145 in a pinched form from both the upper and lower sides. If, moisture contained in the wet paper RP ₀ is squeezed out to the upstream side of the both rolls 120, 121.

In this case, assuming that the inclination angle α formed by the mesh belt 105 and the smooth surface belt 145 is large, the upper smooth surface belt 145 is located on the lower mesh belt 105 at the position near the upstream side of both rolls 120 and 121. of it located in spaced condition the wet paper RP _0, Therefore, a part of the large amount of water contained in the wet paper RP ₀ squeezed and absorbed again in the wet paper RP _0, the wet paper web There is a possibility that RP ₀ may be slurried again.

On the other hand, assuming that the inclination angle α formed by the mesh belt 105 and the smooth surface belt 145 is small, the upper smooth surface belt 145 is located on the lower mesh belt 105 at a position near the upstream side of both rolls 120 and 121. becomes a state of being pressed against the wet paper RP ₀ above, Thus, all of the water squeezed from the wet paper RP ₀ drops to the lower side through the mesh belt 105, the wet paper RP ₀ The re-slurry of the wet paper RP ₀ can be reliably prevented.

  As a result of various tests, the inclination angle α formed by the mesh belt 105 and the smooth surface belt 145 is preferably set to 1 to 20 °, more preferably set to 3 to 7 °. In the illustrated embodiment, It is set to 5 °.

Thus, by driving the drive motor 106, the preliminary dewatering roll unit 96A in the dewatering roll unit 96 and the rolls 120, 121, 125, 126 of the main dewatering roll unit 96B rotate, first, by squeezing roll pair 122, moisture the mesh belt 105 and the smooth surface belt 145 are rolled and squeezes the upper and lower sides at a specified preliminary pressure, in the wet paper RP ₀ on the mesh belt 105 Is preliminarily dehydrated (in the illustrated embodiment, the moisture content of the wet paper RP ₀ is reduced from 90-85% to 80-75%).

Subsequently, the mesh belt 105 and the smooth surface belt 145 are squeezed and rolled with a predetermined book pressure from both the upper and lower sides by a pair of squeezing rolls 127 in the dewatering roll section 96B. The moisture contained in the wet paper RP ₀ is finally dehydrated and removed to obtain a dry paper having a predetermined moisture content, that is, recycled paper RP (in the illustrated embodiment, wet paper having a moisture content of 80 to 75%. RP ₀ becomes dry paper RP having a moisture content of 70 to 65%). The white water W that has been squeezed and dehydrated from the wet paper RP ₀ through this series of steps is collected in the white water collection tank 45 of the water supply device 27.

The wet paper RP ₀ squeezed and dewatered by the dewatering roll unit 96 is transferred and transferred from the upper surface of the lower mesh belt 105 to the lower surface of the upper smooth surface belt 145 in the downstream portion of the dewatering roll unit 96. It is conveyed with the surface belt 145, and the drying process by the drying belt conveyor part 97 is implemented.

The transfer action is considered to occur due to the smooth surface structure of the smooth surface belt 145. That is, the surface of the lower mesh belt 105 is a fine uneven surface formed by opening a large number of fine continuous pores, whereas the surface of the upper smooth surface belt 145 is a smooth surface without holes. As a result, it is considered that the wet paper RP ₀ slightly containing water is adsorbed by the surface tension with the surface of the smooth surface belt 145.

  The drying belt conveyor unit 97 is a portion that is formed by the papermaking belt conveyor unit 95 and then further dried by heating and drying the dry paper RP that has been squeezed and dehydrated by the dewatering roll unit 96. The heat drying unit 171 and the recycled paper smoothing processing unit (recycled paper smoothing device, recycled paper smoothing processing means) 10 are mainly configured.

The drying conveyor 170 conveys the wet paper RP ₀ squeezed and dehydrated by the dewatering roll unit 96 while smoothing, and includes the smooth surface belt 145 and the drive motor 106 that drives the smooth surface belt 145 to travel. It becomes.

The smooth surface belt 145 conveys the wet paper RP ₀ while being heated and dried. Specifically, the smooth surface belt 145 is an endless belt formed by connecting and forming plates having a smooth surface structure having a predetermined width in an annular shape having a predetermined length. . The plate material having a smooth surface structure is made of a material that can finish one side surface of the wet paper RP0 to an appropriate smooth surface and can withstand the heating action by the heating and drying unit 171 to be described later. In the illustrated embodiment, a fluororesin belt is employed.

  As shown in FIGS. 1 and 5, the smooth surface belt 145 is suspended and supported so as to be able to rotate and travel via a driving roller 176, a driven roller 177, a dewatering roll unit 96 and a driven roller 178. The drive motor 106 is connected to the drive motor 176 through the switch 176.

  The drive motor 106 that travels and drives the smooth surface belt 145 is shared as a travel drive source for the papermaking net conveyor 100 and the dewatering roll unit 96 as described above.

Heating and drying unit 171 is a location for heating and drying the wet paper RP ₀ conveyed are transferred and onto the smooth surface belt 145 from the mesh belt 105 of the paper making net conveyor 100, specifically, the wet paper RP ₀ The smooth surface belt 145 that conveys and supports the lower side surface is configured to be heated from below by a heater 180 disposed in the middle of the travel route.

The heater 180 is in the form of a heater plate that is in sliding contact with the side opposite to the conveyance support surface of the wet paper RP _{0 in} the smooth surface belt 145, and is provided in the horizontal travel portion of the travel path of the smooth surface belt 145. The smooth surface belt 145 is provided in sliding contact with the side surface opposite to the upper surface, that is, the lower surface, which is the holding surface of the wet paper RP ₀ . As a result, the wet paper RP ₀ on the smooth surface belt 145 is indirectly heated and dried by the smooth surface belt 145 heated by the heater plate 180.

  The specific structure of the heater 180 of the illustrated embodiment is configured to have a function as the recycled paper smoothing processing unit 10 as shown in FIG.

  That is, the recycled paper smoothing processing unit 10 of the present embodiment supports the smooth surface belt 145 and the smooth surface belt 145 by sliding contact from below, and curves the smooth surface belt 145 upward in the running direction. A belt guide part (belt guide means) 200 that guides running in the state of being provided is provided as a main part, and the heater 180 functions as the belt guide part 200.

  Specifically, the belt guide portion 200 is formed of a plate-like body that is curved upward toward the running direction of the smooth surface belt 145 and has a horizontal linear contour in the width direction. A belt having a strength and abrasion resistance for slidingly supporting the belt 145 from the lower side and having excellent heat conductivity as a heater plate base material is preferably used.

  The belt guide portion 200 of the illustrated embodiment is made of a stainless steel (SUS) plate, and is attached to and supported by the apparatus body 54 by support substrates 201 and 201, and the upper surface thereof is the curved guide surface 200a. . Although not specifically shown, a thin plate-like so-called planar heater is integrally attached to the lower surface 200b of the belt guide portion 200, and the heater 180 in the form of a heater plate is provided. It is configured.

  The smooth surface belt 145 is slidably contacted with a predetermined tension with respect to the curved guide surface 200a of the belt guide portion 200 configured as described above. As a result, the smooth surface belt 145 is slidably guided on the curved guide surface 200a of the belt guide portion 200 and travels in a curved state upward (see FIG. 5).

Also, recycled paper smoothing processing unit 10 of the present embodiment, in addition to the above structure, provided with a pressing portion 250 for pressing with a uniform pressure across the wet paper RP ₀ conveyed from the upper by the smooth surface belt 145.

  Specifically, the pressing portion 250 is in the form of a covered belt conveyor as shown in FIG.

  The covering belt conveyor 250 includes a covering belt 251 configured to travel in the same horizontal direction while being overlapped with the smooth surface belt 145, and the drive motor 106 that travels and drives the covering belt 251. . The drive motor 106 is also used as a drive source for the paper making net conveyor 100 and the dewatering roll unit 96 as described in the first embodiment.

The covering belt 251 is in the form of an endless belt that travels while covering the entire wet paper RP ₀ on the smooth surface belt 145 with the smooth surface belt 145 so as to be sandwiched in close contact therewith. A flat smoothing surface for smoothing the entire wet paper RP _{0 in} cooperation with the upper surface of the smooth surface belt 145 on the side covering the entire paper RP ₀ with the smooth surface belt 145. Is forming. The coverage range of the mesh belt 251 with respect to the wet paper RP ₀ (recycled paper RP) is set to a range that substantially faces the belt guide portion 200 (that is, the heater plate 180) in the travel route of the smooth surface belt 145.

The covering belt 251 is specifically is formed from the mesh belt, comprising a ventilation network structure composed of numerous mesh cells capable of venting releases the steam heating evaporates from the wet paper RP _0.

The plate material of the ventilation net structure that constitutes the mesh belt 251 is made of a material that can smoothly pass and release moisture evaporated from the wet paper RP ₀ on the smooth surface belt 145 upward through countless meshes. The same as the mesh belt 105 of the paper making unit 4 described above, such as polypropylene (PP), polyethylene terephthalate (PET), polyamide (PA) (generally called “nylon” (registered trademark)), stainless steel (SUS), etc. It is made of a material having excellent corrosion resistance, and in the illustrated embodiment, it is a PET mesh belt 251 having excellent heat resistance.

  Further, the mesh structure of the mesh belt 251 is preferably a fine mesh structure or a fine and smooth mesh structure. Like the mesh belt 105 of the papermaking unit 4 described above, specifically, the characteristics of the target paper are considered. Correspondingly selected.

As long as the mesh belt 251 has heat resistance to high heat at the time of heat drying and air permeability capable of venting water vapor evaporated from the wet paper RP _0, design requirements as severe as the mesh belt 105 forming the core of the papermaking unit 4 are required. However, as the mesh belt 251 of the illustrated embodiment, a PET mesh mesh belt of 25 mesh is used.

Further, the width dimension of the mesh belt 251 is set to be the same as the width dimension of the smooth surface belt 145 so as to overlap the smooth surface belt 145 and sandwich the wet paper RP ₀ between them as shown in FIG. Has been.

  The mesh belt 251 is suspended and supported by a driving roller 255 and a driven roller 256 so as to be able to rotate, and the driving roller 255 is drivingly connected to the driving motor 106.

  Further, the mesh belt 251 is disposed so as to be slidable with a predetermined tension with respect to the curved guide surface 200 a of the belt guide portion 200 via the smooth surface belt 145. As a result, the mesh belt 251 is slidably guided in the same direction on the curved guide surface 200a of the belt guide portion 200 while being overlapped with the smooth surface belt 145, and travels in a state curved upward. (See FIG. 9 and FIG. 10 (a)).

Further, with the arrangement configuration of the mesh belt 251 as described above, the covering belt 251 presses the wet paper RP ₀ on the smooth surface belt 145 with a uniform pressure over the entire length of the covering range, and the wet paper RP ₀ (recycled paper RP) is pressed. The surface of the wet paper RP ₀ (recycled paper RP) that contacts the surface of the smooth surface belt 145 is finished to an appropriate smooth surface without causing warpage or wrinkles.

Then, after the wet paper RP ₀ squeezed and dewatered by the dewatering roll unit 96 is transferred from the upper surface of the lower mesh belt 105 to the lower surface of the upper smooth surface belt 145, the smooth surface belt 145 moves the rollers 178 and 176. The wet paper RP ₀ on the smooth surface belt 145 that is reversed and traveled by the smooth surface belt 145 passes through the smooth surface belt 145 and the smooth surface belt 145 by the belt guide 200 (180). Due to the curved shape of the belt, a uniform tension is applied in the conveying and traveling direction, and sandwiched with a uniform pressure from above and below by the pressure applied by the mesh belt 251 of the covering belt conveyor 250 from above. However, it is heated and dried. Thereby, wrinkles and warpage generated in the wet paper RP ₀ in the paper making process of the previous process are effectively eliminated and removed, and occurrence of wrinkle and warpage of the wet paper due to the heating and drying action by the heater plate 180 is also effectively prevented. Further, to obtain a moderate air permeability of the upper mesh belt 251, the wet paper RP0 is uniform drying one side, as a result, the wet paper RP ₀ may be regenerated into a smooth recycled paper (dry paper) RP as a whole .

In other words, the wet paper RP ₀ (recycled paper RP) is produced by the cooperative action of the tension uniformly applied in the conveyance traveling direction and the sandwich structure having a predetermined pressure by the smooth surface belt 145 and the covering belt 251. As a result of the heat drying treatment while maintaining a flat state, wrinkles and warpage generated in the wet paper RP ₀ in the previous paper making process are more effectively eliminated and removed, and the moisture due to the heat drying action by the heater plate 180 is removed. Occurrence of wrinkles and warpage of the paper RP ₀ (recycled paper RP) is further effectively prevented, and as a result, it is possible to reliably regenerate the smooth recycled paper RP without wrinkles in a very small waste paper processing space of a fixture size. it can.

Further, by covering belt 251 of the covering belt conveyor 250 is formed from a mesh belt composed of numerous mesh cells capable of passing through release moisture heated and evaporated from the wet paper RP ₀ on the smooth surface belt 145 to the upper side, Despite the presence of the covering belt 251, the steam generated by heating the wet paper RP ₀ efficiently rises and dissipates, and the drying process can be smoothly promoted.

  A peeling member 210 is provided on the smooth surface belt 145 on the downstream side of the heating and drying unit 171. The release member 210 is dried and conveyed on the smooth surface belt 145, that is, recycled paper RP (water content 10 to 10). 7%) are sequentially peeled from the holding surface of the smooth surface belt 145.

  In this connection, a fixed-size cutter unit 211 is provided at the end of the traveling path of the smooth surface belt 145 on the downstream side of the peeling member 210, and the recycled paper RP peeled from the smooth surface belt 145 is Here, it is cut into a predetermined shape (in the illustrated embodiment, the shape and dimension of the A4 plate) and discharged from the discharge port 8 of the apparatus case 6.

  The device control unit 5 automatically controls the operations of the respective drive units of the pulp manufacturing unit 2, the pulp concentration adjusting unit 3 and the paper making unit 4 described above. Specifically, the CPU, ROM, RAM And a microcomputer including an I / O port.

  The apparatus control unit 5 incorporates a program for causing the pulp manufacturing process of the pulp manufacturing unit 2, the concentration adjusting process of the concentration adjusting unit 3, and the paper making process of the paper making unit 4 to be executed in conjunction with each other. Various information necessary for driving each component 2 (20, 21), 3 (3A, 3B), 4 (95, 96, 97), for example, the driving time and rotational speed of the stirring device 26 in the disaggregation unit 20, Water supply timing and water supply amount of the water supply device 27, driving time and circulation amount of the circulation pump 69 in the beating unit 21, driving time and rotation speed of the grinder 50, adjustment timing of the gap adjusting means 57 and beating gap G adjustment amount, and The traveling speed of the conveyors 100 and 170 in the paper making unit 4, the driving time of the heating and drying unit 171 and the operation timing of the fixed size cutter unit 211 are as follows. It is appropriate selective input or keyboard or the like as order data.

  Further, as described above, the weight sensors 48 and 87 and the drive units 35, 41, 56, 61, 66, and 106 are electrically connected to the device control unit 5, and the device control unit 5 The drive units 35, 41, 56, 61, 66, and 106 are controlled in accordance with these various actually measured values and control data.

  Thus, the used paper recycling apparatus 1 configured as described above is activated when the power is turned on, and the component control units 5 (20, 21), 3 (3A, 3B), 4 (95, 96) are operated by the apparatus control unit 5. , 97) are automatically controlled in relation to each other, so that the used paper UP, UP,... Put into the inlet 7 of the apparatus case 6 are separated by the disaggregation unit 20 and the beating unit 21 of the pulp manufacturing unit 2. After the beating process, the used paper pulp UPP is manufactured, and the pulp concentration PS is prepared by the pulp concentration adjusting unit 3. Then, the pulp suspension PS is converted into the papermaking belt conveyor unit 95 of the papermaking unit 4, Paper is made by the dewatering roll unit 96 and the drying belt conveyor unit 97, regenerated as recycled paper RP, and discharged from the discharge port 8 of the apparatus case 6 to the recycled paper receiving tray 9.

In the used paper recycling apparatus 1 configured as described above, the pulp supply section (pulp supply apparatus) 15 of the papermaking section 4 is in sliding contact with the upper surface 105a of the mesh belt 105 on which the papermaking belt conveyor section (papermaking process section) 95 runs. A staying portion 113 that retains a slurry-like pulp suspension PS in which water W and waste paper pulp UP coexisting with each other and are sent from the pulp manufacturing section 2 are retained, and the mesh belt of the pulp suspension PS. 105. A papermaking frame 110 that defines a supply width L to the upper surface 105 is provided, and an overflow that makes the water level H of the pulp suspension PS retained in the staying part 113 constant at the tip portion of the papermaking frame 110 is constant. And the pulp suspension PS supplied into the papermaking frame 110 stays in the staying part 113 up to a water level H defined by the overflow part 114. Since the staying action and the running action of the mesh belt 105 cooperate with each other, the upper surface of the mesh belt 105 is uniformly diffused and supplied. Therefore, the supply amount of the pulp suspension PS sent into the papermaking frame 110 is supplied. even if variations in, the water level H of the pulp suspension PS staying in the paper making frame body 110 is maintained constant at all times, as a result, the basis weight of the wet paper RP ₀ to ska on the mesh belt 105 Is stable, and as a result, a recycled paper RP having a uniform texture can be obtained.

  Note that the above-described embodiments merely show preferred embodiments of the present invention, and the present invention is not limited to these, and various design changes can be made within the scope thereof.

  For example, the specific configuration of the pulp supply unit (pulp supply device) 15 according to the present invention is not limited to the illustrated embodiment, and other configurations having similar functions can be employed.

  As an example, in the used paper recycling apparatus of the illustrated embodiment, the grinder 50 constituting the beating unit 21 of the pulp manufacturing unit 2 presses and beats the used paper with its beating action surfaces 51a and 52a, and characters on the used paper, Large-scale used paper recycling facilities such as paper mills and used paper recycling factories are made using only water such as drinking water obtained from general waterworks facilities by grinding and miniaturizing inks that form figures, etc. In the present invention, it is possible to completely eliminate the use of paper-making chemicals such as waste paper deinking agent, which has been required in the past, but the present invention does not use such special paper-making chemicals. Of course, the present invention can be applied not only to a used paper recycling apparatus capable of realizing a used paper recycling process using only water, but also to a used paper recycling apparatus that requires the use of a papermaking agent such as a used paper deinking agent.

UP Wastepaper UPP Wastepaper pulp PS Pulp suspension RP Recycled paper L Frame width (supply width)
1 Waste Paper Recycling Equipment 2 Pulp Production Department 3 Pulp Concentration Adjustment Department 4 Paper Making Department (Paper Making Equipment)
5 Device control unit (control unit)
15 Pulp supply unit (pulp supply device)
95 Papermaking belt conveyor (papermaking process)
96 Dewatering roll unit 97 Drying belt conveyor unit 100 Papermaking net conveyor (papermaking conveyor)
105 Net Belt 110 Paper Making Frame 111 Partition Member 112 Main Body Frame 113 Retaining Part 114 Overflow Part (Overflow Means)
115 Flow path 115
300 Flat member 301 Guide sheet 302 Overflow weir 303 Recovery path

Claims (13)

This is a device that constitutes the pulp supply unit of a papermaking machine that produces recycled paper by making wastepaper pulp produced in the pulp production department in the previous process in a furniture-size wastepaper recycling apparatus that can be placed where wastepaper is generated. And
A stagnation part is disposed so as to be slidable on the upper surface of the endless reticulated belt that the papermaking process unit travels, and retains a slurry-like pulp suspension in which water sent from the pulp production unit and waste paper pulp coexist. And having a papermaking frame that defines the supply width of the pulp suspension to the upper surface of the endless mesh belt,
Overflow means for making the water level of the pulp suspension retained in the retention part constant is provided at the leading end portion of the papermaking frame,
This overflow means is provided on both side walls of the staying portion at the front end portion of the papermaking frame body, and overflows the pulp suspension when the water level of the pulp suspension retained in the papermaking frame body exceeds a certain level. An overflow weir, and a recovery path that leads from the outside of the overflow weir to the recovery port through the perimeter of the papermaking frame ,
The pulp suspension supplied into the papermaking frame stays in the staying portion up to the water level defined by the overflow means, and by the cooperating action of this staying action and the running action of the endless mesh belt. Supplied uniformly distributed on the upper surface of the endless mesh belt
A pulp supply device for used paper recycling apparatus. The width of the paper frame is set to the width of recycled paper to be produced to define the supply width of the pulp suspension to the upper surface of the endless mesh belt. The pulp supply apparatus of the used paper recycling apparatus of 1. The used paper recycling apparatus according to claim 1 , wherein the upper edge of the overflow weir is set to be a horizontal straight line when the papermaking frame is installed on the endless mesh belt. Pulp feeder. A flat plate member is provided at the bottom of the papermaking frame to cover the mesh of the mesh belt in a closed state from above. The flat plate member and the traveling endless mesh belt form a bottom surface portion of the staying portion. ,
The pulp suspension supplied into the papermaking frame stays in the staying portion up to the water level defined by the overflow means, and by the cooperating action of this staying action and the running action of the endless mesh belt. The pulp supply device for used paper recycling apparatus according to claim 1, wherein the pulp supply device is uniformly diffused and supplied to the upper surface of the endless mesh belt. The leading edge of the flat plate member of the paper making frame body, according to claim 4, characterized in that the thin guide sheet is provided for ensuring a smooth flow of pulp suspension to the mesh belt Pulp recycling equipment for used paper recycling equipment. In the upstream side of the staying portion in the papermaking frame, a meandering flow passage is provided that promotes uniform dispersion of the supplied pulp suspension and prevents disturbance of the pulp suspension. The pulp supply apparatus of the used paper recycling apparatus according to claim 1, The used paper recycling according to claim 6 , wherein the meandering flow path is provided to meander in a vertical direction between a pulp suspension supply port of the paper making frame and the staying portion. Equipment pulp feeder. The used paper recycling according to claim 6 , wherein the meandering flow path is provided to meander in a vertical direction between a pulp suspension supply port of the paper making frame and the staying portion. Equipment pulp feeder. The pulp supply device of the used paper recycling apparatus according to claim 1, further comprising a partition member disposed so as to be slidable on a lower surface of the traveling endless mesh belt. The pulp supply device of the used paper recycling apparatus according to claim 9 , wherein the partition member has a slat structure that slidably supports the lower surface of the endless mesh belt. The pulp supply device of the used paper recycling apparatus according to claim 1, wherein the endless mesh belt is disposed so as to be inclined upward in the traveling direction. A paper-making apparatus that constitutes a waste-size paper recycling device that can be placed where waste paper is generated, and makes recycled paper by making waste paper pulp produced by a pulp production device in the previous process,
A papermaking process unit for making wet paper by making a slurry-like pulp suspension coexisting with water sent from the pulp production apparatus and waste paper pulp,
The paper making process section is provided at a paper making conveyor for transporting the pulp suspension while making the pulp suspension, and at a paper making process start end position of the paper making conveyor, and the pulp suspension from the pulp manufacturing apparatus is transferred to the paper making conveyor. A pulp supply section for supplying,
The paper supply device of the used paper recycling apparatus, wherein the pulp supply unit is configured by the pulp supply device according to any one of claims 1 to 11 . A pulp manufacturing department that produces waste paper pulp by separating and beating the used paper in a fixture-size device case, a paper making department that produces recycled paper by making waste paper pulp produced by this pulp manufacturing department, and these pulps It is equipped with a control unit that drives and controls the production unit and the papermaking unit.
The waste paper recycling apparatus, wherein the paper making section is constituted by the paper making apparatus according to claim 12 .

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